Mattamy Homes is a privately held residential homebuilder headquartered in Toronto, Ontario. Founded in 1978 by Peter Gilgan, the company is Canada’s largest new home builder and ranks among the top 25 in the U.S. It operates across the Greater Toronto Area, Ottawa, Calgary, Edmonton, and in several U.S. markets including Orlando, Charlotte, Dallas, and Phoenix. Over time, Mattamy introduced innovations like multi-phased communities, factory-built homes, and in 2022 completed its first GeoExchange net-zero energy community. It constructs single-family homes, townhomes, condominiums, and mixed-use developments. As a family-led firm, Mattamy remains under private ownership, overseen via Mattamy Asset Management as the parent. The company has been recognized with industry awards such as Canada’s Best Managed Companies and numerous Parade of Homes and ENERGY STAR® awards.